Effectiveness of pyramided genes in conferring resistance to anthracnose disease in common bean populations

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dc.creatorKiryowa, Moses J.
dc.creatorNkalubo, Stanley T.
dc.creatorMukankusi, Clare
dc.creatorMale, Allan
dc.creatorTukamuhabwe, Phineas
dc.creatorRubaihayo, P.
dc.creatorGibson, Paul T.
dc.date2021-01-16
dc.date2022-12-06T09:15:33Z
dc.date2022-12-06T09:15:33Z
dc.date.accessioned2026-06-27T13:31:18Z
dc.descriptionAnthracnose disease (Colletotrichum lindemuthianum (Sacc. et. Magn) Lams. Scrib.) is one of the most devastating diseases that constrain common bean production in Uganda. A cascading pedigree pyramiding scheme was used to develop common bean populations to evaluate the effectiveness of pyramided and single resistance genes (Co-42, Co-43, Co-5, and Co-9) on disease development. Detached leaf trifoliates of F4:6 genotypes were screened with four C. lindemuthianum races (352, 713,767 and 2047). Disease severity data were subjected to ANOVA. Races, genotypes and Race x Genotype interaction were significant. Genes Co-42 and Co-5 conferred resistance to the four races and the gene pyramids Co-42+Co-5+Co-9 and Co-42+Co-5 had the lowest severity scores. Gene Co-43 conferred resistance to race 352 and weak resistance to race 713; whereas gene Co-9 conferred resistance to race 352. Co-43+Co-9 gene pyramid showed resistance only to race 352. The Co-42 and Co-5 genes conferred resistance to all the four races 352, 713, 767 and 2047. The single gene Co-42 was not significantly different from the pyramids Co-42+Co-5+Co-9 and Co-42+Co-5 (P<0.01). Similarly, the Co-5gene was not significantly different from Co-42+Co-5, Co-42+Co-9 and Co-5+Co-9 pyramids. The Co-9gene showed antagonism in all pyramids. These results indicate that pyramiding of resistance genes would be effective for disease management in Uganda, but pyramids with Co-9 gene would be less effective.
dc.formatapplication/pdf
dc.identifierhttps://hdl.handle.net/10568/125791
dc.identifier.urihttp://hdl.handle.net/123456789/62002
dc.languageen
dc.publisherAcademic Journals
dc.rightsOpen Access
dc.sourceKiryowa, M.; Nkalubo, S.; Mukankusi, C.; Male, A.; Gibson, P.; Tukamuhabwa, P.; Rubaihayo, P. (2021) Effectiveness of pyramided genes in conferring resistance to anthracnose disease in common bean populations. Journal of Plant Breeding and Crop Science 13(1) p. 1-13 . ISSN: 2006-9758
dc.subjectmarker-assisted selection
dc.subjectdefence mechanisms-resistance mechanisms
dc.subjectpathogens
dc.subjectselección asistida por marcadores
dc.subjectmecanismos de defensa
dc.subjectorganismos patógenos
dc.titleEffectiveness of pyramided genes in conferring resistance to anthracnose disease in common bean populations
dc.typeJournal Article

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